This is a handheld wall scanner for quick detection of magnetic-metals in wall, rooftop and floor, such as reinforcing steels, iron pipes, and nonmagnetic metals such as aluminum pipes, copper pipes, and nonmetal materials such as beams, PVC water pipes, as well as electrified objects as live wires. Features: Perfect for detecting metal, wood and A-C cable in the wall. Indicates the detecting results by Light and Beep. Detect A-C cable with voltage higher than 110-V, 50-60Hz, the sensibility may be weak when the cable is grounded. High accuracy, with a maximum detection depth of 110mm. Portable size and easy to use. Specifications: Main color: black Main material: plastics Maximum scanning depth: Ferrous metal: 110 mm Non-ferrous metals (Copper): 110 mm Live conductors : 50 mm Wood: 25 mm Working temperature: -10 to 50℃ Storage temperature: -20 to 70℃ Altitude: ≤2000M Battery: 3 * AAA battery (not included) Item size: 185 * 85 * 33mm / 7.3 * 3.3 * 1.3in Item weight: 180g / 6.3ounce Package size: 190 * 80 * 50mm / 7.5 * 3.1 * 2.0in Package weight: 300g / 10.6ounce Packing List: 1 * Wall Scanner 1 * Storage Bag 1 * User Manual